[Eman.]

Hi,

I am doing an LES simulation in OpenFoam. To obtain the inlet boundary condition, I was planning to do a separate simulation for a periodic pipe and use the velocity profile of the periodic pipe as the inlet of my main simulation. However, I recently found out about this "mapped" inlet boundary condition in OpenFoam. I am wondering how it actually maps the velocity profile back to the inlet and also if it is as accurate as doing a periodic pipe simulation. Any comments would be appreciated.

Thanks.

[tiam]

Hi,
You can achieve good accuracy with such recycling methods. But make sure to make the distance between the inlet and the plane you map from large enough, so that you don't introduce extra periodicity.


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[Eman.]

Originally Posted by tiam

Hi,
You can achieve good accuracy with such recycling methods. But make sure to make the distance between the inlet and the plane you map from large enough, so that you don't introduce extra periodicity.


Sent from my iPhone using CFD Online Forum mobile app

Thanks for the reply.
How can I specify the plane from which I project? In the Pitzdaily mapped there are only the following options and none of them is related to the source plane.

inlet
{
type mapped;
value uniform (10 0 0);
interpolationScheme cell;
setAverage true;
average (10 0 0);
}

[calf.Z]

I am also wandering this boundary ，have you resolved your problems with this boundary？ Can you give me some hints？Thank you.

[fumiya]

Settings on the source plane is described in the polyMesh/boundary file.

[mAlletto]

Sorry wrong post. I don't know how to delete the post and hence edited it.